15216155 has 16 divisors (see below), whose sum is σ = 19094400. Its totient is φ = 11625600.

The previous prime is 15216143. The next prime is 15216163. The reversal of 15216155 is 55161251.

15216155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15216155 - 2¹⁴ = 15199771 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14126 + ... + 15164.

It is an arithmetic number, because the mean of its divisors is an integer number (1193400).

Almost surely, 2^15216155 is an apocalyptic number.

15216155 is a deficient number, since it is larger than the sum of its proper divisors (3878245).

15216155 is a wasteful number, since it uses less digits than its factorization.

15216155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174.

The product of its digits is 1500, while the sum is 26.

The square root of 15216155 is about 3900.7890227491. The cubic root of 15216155 is about 247.8001935134.

The spelling of 15216155 in words is "fifteen million, two hundred sixteen thousand, one hundred fifty-five".